Electronic device

Abstract

The present application discloses an electronic device, comprising a housing, a decorative piece, and an elastic sealing piece. The housing is provided with an accommodating space used for accommodating a microphone, the housing comprises a rear cover, and the rear cover is provided with a first through hole. The decorative piece is mounted on the outer side of the rear cover, and is provided with a sound pickup hole communicated with the first through hole. The elastic sealing piece is located in the accommodating space and is mounted between the rear cover and the microphone, and the elastic sealing piece is provided with a second through hole communicating the first through hole with the microphone. The first through hole and the second through hole form a sound pickup channel, and external sound waves enter the sound pickup channel through the sound pickup hole and are conducted to the microphone. According to the electronic device, a sound channel structure can be formed by only sequentially installing the decorative piece, the rear cover and the elastic sealing piece, and compared with the related art, the part machining number and the part assembling number are optimized and reduced, thereby reducing the forming difficulty and the manufacturing cost of the sound channel structure.

Description

electronic devices Technical Field

[0001] The present application relates to the technical field of electronic devices. Background Art

[0002] Active Noise-Canceling (ANC) technology is widely used in electronic devices such as headphones and smartphones. It is a technology that achieves noise reduction effect by reversing the phase of sound waves and canceling each other out.

[0003] When active noise reduction technology is applied to smartphones, a sound channel structure must be built on the smartphone to guide external sound waves to the microphone.

[0004] In related technologies, the sound channel structure is primarily constructed from a camera trim, a plastic bracket, and foam. During assembly, the camera trim and plastic bracket must be secured to the back cover. Due to the large number of components, both the processing and assembly steps require high control, making the sound channel structure difficult to mold. Furthermore, the excessive number of components leads to high manufacturing costs for the entire device.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide an electronic device that can form a sound channel structure by simply installing a decorative part, a back cover, and an elastic seal in sequence. Compared with related technologies, both the number of parts processed and the number of parts assembled have been optimized and reduced, thereby reducing the difficulty of forming the sound channel structure and the manufacturing cost.

[0007] The present application provides an electronic device, including a housing, a decorative component, and an elastic sealing component.

[0008] The housing has an accommodating space for accommodating a microphone. The housing includes a back cover provided with a first through hole.

[0009] The decorative piece is installed on the outer side of the rear cover, and the decorative piece is provided with a sound pickup hole connected with the first through hole.

[0010] The elastic sealing component is located in the accommodating space and is installed between the back cover and the microphone. The elastic sealing component is provided with a second through hole communicating with the first through hole and the microphone.

[0011] The first through hole and the second through hole form a sound pickup channel, and external sound waves enter the sound pickup channel through the sound pickup hole and are transmitted to the microphone.

[0012] The electronic device in the present application has a sound channel structure mainly composed of two parts: a sound pickup hole and a sound pickup channel. The sound pickup hole is provided on the decorative part, and the sound pickup channel is formed by a first through hole provided on the back cover and a second through hole provided on the elastic sealing part. External sound waves enter the sound pickup channel through the sound pickup hole and are transmitted to the microphone, so that the microphone can receive external sound waves. When assembling the various components to form the sound channel structure, it is only necessary to install the decorative part, the back cover, and the elastic sealing part in sequence. Compared with the related art, both the number of components to be processed and the number of components to be assembled have been optimized and reduced, and the control requirements for the process in the processing and assembly processes of the components are relatively low, making the embodiment of the present application less difficult to form the sound channel structure. In addition, when the sound channel structure in the embodiment of the present application is applied to an electronic device, the manufacturing cost of the entire device is also reduced due to the reduction in components.

[0013] Furthermore, in the related art, because the sound pickup channel is formed by the foam and the holes in the plastic bracket, the position of the sound pickup channel is restricted by the plastic bracket, which in turn limits the position of the microphone, preventing it from being placed directly under the rear cover. In the present application, because the sound pickup channel is formed by the rear cover and the elastic seal, the microphone can be placed directly under the rear cover, making the microphone placement more flexible and fully utilizing the storage space to optimize the structural design.

[0014] In one possible design, the decorative piece has a first groove on the side facing the back cover, one end of the first groove is connected to the outside, and the other end is connected to the first through hole, and the groove wall of the first groove and the surface of the back cover form a sound pickup hole.

[0015] The opening of the sound pickup hole facing the outside world is located on the side of the decorative part, so that when the user holds the electronic device, it is not easy for the user's fingers to block the sound pickup hole. Not only that, the opening of the sound pickup hole facing the outside world is located at the root of the decorative part, making it even more difficult for the user to block the sound pickup hole, thereby ensuring that the microphone can effectively receive external sound waves.

[0016] In a possible design, the decorative part also has a second groove on the side facing the back cover, and the first groove and the first through hole are connected through the second groove, so that the second groove, the first through hole and the second through hole form a sound pickup channel; the volume inside the second groove is larger than the volume inside the first groove.

[0017] When external sound waves enter the pickup channel from the pickup hole (or the first slot), Helmholtz resonance will occur in the second slot to amplify the external noise and make the noise characteristics more obvious so that it can be more easily received by the microphone, thereby indirectly improving the sensitivity of the microphone in collecting noise, thereby providing more accurate noise information for the active noise reduction module.

[0018] In a possible design, the cross-sectional area of ​​the second groove gradually decreases from the first groove toward the second groove.

[0019] The external sound waves entering the second groove can be gathered and guided to the first through hole, so that the sound wave flow has directionality and can be fully received by the microphone, further improving the sensitivity of the microphone in collecting noise.

[0020] In one possible design, the slot area of ​​the second slot is larger than the hole area of ​​the first through hole;

[0021] And / or, the aperture area of ​​the second through hole is larger than the aperture area of ​​the first through hole.

[0022] The decorative member and the rear cover, as well as the elastic seal and the rear cover, can be easily sealed and installed. When adjusting the position of the first through hole relative to the second groove and the second through hole, the decorative member and the elastic seal are less likely to block the first through hole. Furthermore, the first through hole has a certain degree of offset margin on the rear cover, eliminating the need for overly precise restrictions on the position of the first through hole on the rear cover, thereby reducing the difficulty of rear cover processing.

[0023] In a possible design, a stop structure is provided at the junction of the decorative piece and the rear cover.

[0024] In one possible design, the stop structure includes a strip-shaped protrusion and a concave plane that is shaped like the strip-shaped protrusion, wherein the strip-shaped protrusion is arranged on one of the decorative piece and the back cover, and the concave plane is arranged on the other of the decorative piece and the back cover.

[0025] The stop structure can play a role of limiting and blocking glue, preventing the adhesive from overflowing, and at the same time playing a role of preventing static electricity release.

[0026] In a possible design, the strip-shaped protrusions and the recessed surface are bonded by adhesive.

[0027] In addition to achieving mechanical connection between the decorative part and the rear cover, better sealing can also be achieved at the connection between the two.

[0028] In a possible design, the electronic device further includes a breathable barrier installed between the back cover and the elastic sealing member, and covering the connection between the first through hole and the second through hole.

[0029] The air-permeable barrier covers the connection between the first through hole and the second through hole, so that the sound pickup channel can be protected by the air-permeable barrier to prevent foreign objects from entering, while also ensuring that external sound waves can enter the sound pickup channel and be received by the microphone.

[0030] In one possible design, the electronic device also includes a bracket installed between the back cover and the elastic seal, and the bracket is provided with a third through hole connecting the first through hole with the second through hole, so that the second groove, the first through hole, the third through hole and the second through hole form a sound pickup channel.

[0031] If the bracket interferes with the sound pickup channel, there is no need to avoid the bracket but the bracket can be directly involved in constructing the sound pickup channel. This is conducive to structural design and can reduce the difficulty of avoiding the bracket design. In addition, it also has the advantage of ensuring the reliable strength of the bracket.

[0032] In a possible design, the bracket has a receiving groove, the decorative piece and the back cover are located in the receiving groove, and the back cover is bonded to the bottom of the receiving groove by adhesive.

[0033] The invention has a receiving groove for accommodating the decorative part and the back cover, so that the decorative part, the back cover and the bracket have a compact structure after being assembled together.

[0034] In a possible design, the electronic device further includes a breathable barrier installed between the bracket and the elastic sealing member, and covering the connection between the second through hole and the third through hole.

[0035] The breathable barrier covers the connection between the second through hole and the third through hole, so that the sound pickup channel can be protected by the breathable barrier to prevent foreign objects from entering, while also ensuring that external sound waves can enter the sound pickup channel and be received by the microphone.

[0036] In a possible design, a side of the bracket facing the breathable barrier has a positioning structure, and the breathable barrier is bonded to the positioning structure by an adhesive.

[0037] The positioning structure can determine the installation position of the breathable barrier, making the assembly process more convenient. In addition, the adhesive bonding not only achieves a mechanical connection between the breathable barrier and the bracket, but also achieves a good seal at the connection between the third through hole and the breathable barrier.

[0038] In a possible design, the decorative part includes a logo decorative part or a camera decorative part.

[0039] In one possible design, the bracket includes a camera bracket or a motherboard bracket.

[0040] In a possible design, the hole axes of the first through hole, the third through hole, and the second through hole are parallel or collinear.

[0041] In a possible design, the corners of the second groove are rounded chamfers.

[0042] The corners of the second groove are rounded, which is beneficial to the conduction of sound waves and the occurrence of Helmholtz resonance in the second groove.

[0043] In a possible design, the hole axes of the first through hole and the second through hole are parallel or collinear. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] FIG1 is a schematic diagram of the back side of a smartphone in the related art;

[0045] FIG2 is a cross-sectional view taken along line AA in FIG1 ;

[0046] FIG3 is a schematic diagram of an example of a smart phone provided in an embodiment of the present application;

[0047] FIG4 is a schematic diagram of another example of a smart phone provided in an embodiment of the present application;

[0048] FIG5 is a cross-sectional view taken along line BB in FIG3 ;

[0049] FIG6 is a partial schematic diagram of a decorative element provided in an embodiment of the present application;

[0050] FIG7 is a bottom plan view of a decorative element provided in an embodiment of the present application;

[0051] FIG8 is an overall schematic diagram of a rear cover provided in an embodiment of the present application;

[0052] FIG9 is a partial schematic diagram of a back cover provided in an embodiment of the present application;

[0053] FIG10 is an exploded view of a decorative member, a rear cover, a breathable barrier, and an elastic sealing member provided in an embodiment of the present application;

[0054] FIG11 is an assembly diagram of a decorative member, a rear cover, a breathable barrier, and an elastic sealing member provided in an embodiment of the present application;

[0055] FIG12 is a cross-sectional view taken along line CC in FIG11 ;

[0056] FIG13 is a partial schematic diagram of a bracket provided in an embodiment of the present application;

[0057] FIG14 is an exploded view of a decorative member, a rear cover, a bracket, a breathable barrier, and an elastic sealing member provided in an embodiment of the present application;

[0058] FIG15 is an assembly diagram of a decorative member, a rear cover, a bracket, a breathable barrier, and an elastic sealing member provided in an embodiment of the present application;

[0059] FIG16 is a cross-sectional view taken along line DD in FIG15.

[0060] Reference numerals:

[0061] 01. Camera decoration; 02. Plastic bracket; 03. Foam;

[0062] 10. Housing; 11. Accommodation space; 12. Back cover; 121. First through hole; 122. Concave plane; 13. Middle frame;

[0063] 20. Decorative piece; 21. Sound pickup hole; 22. First groove; 23. Second groove; 24. Bar-shaped protrusion;

[0064] 30. Elastic sealing member; 31. Second through hole;

[0065] 40. Bracket; 41. Third through hole; 42. Accommodating groove; 43. Positioning structure;

[0066] 50. Breathable barrier; 60. Adhesive; 70. Microphone; 71. Mainboard; 80. Sound pickup channel; 90. Stop structure; 100. Display screen. DETAILED DESCRIPTION

[0067] The following is an illustrative introduction to the relevant contents that may be involved in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments.

[0068] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0069] In the description of this application, it should be understood that the terms "upper", "lower", "side", "inside", "outside", "top", "bottom", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0070] It should also be noted that, in the embodiments of the present application, the same reference numerals are used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or parts as an example. It should be understood that the reference numerals are also applicable to other identical parts or parts.

[0071] In the description of this application, it should be noted that the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0072] Active noise cancellation technology is widely used in electronic devices such as headphones and smartphones. It achieves noise reduction by leveraging the phase reversal and mutual cancellation of sound waves. The active noise cancellation process can be roughly divided into four steps: microphones collect ambient noise, analyze the noise waves, electronic devices generate reverse sound waves, and output the final audio information.

[0073] Currently, smartphone microphones for collecting ambient noise are primarily located in two locations: on the back and on the side. When the microphone is located on the back of the phone, to ensure a consistent appearance with the back cover (also known as the battery cover), the microphone's sound pickup hole is typically not located on the back cover. Instead, the hole is located on the camera trim. Furthermore, a sealed channel must be constructed between the hole and the microphone to ensure high-quality sound reception.

[0074] Fig. 1 is a schematic diagram of the back of a smartphone in the related art. Fig. 2 is a cross-sectional view taken along line AA in Fig. 1 .

[0075] As shown in Figures 1 and 2, in the related art, the camera decoration 01 is installed on the outside of the back cover 12, and a sound pickup hole 21 is opened on the camera decoration 01. A plastic bracket 02 needs to be installed on the inside of the back cover 12. Foam 03 is installed between the plastic bracket 02 and the microphone 70, and the sound pickup channel 80 is formed by the holes on the plastic bracket 02 and the foam 03.

[0076] When assembling the various components to form the sound channel structure, the camera trim 01, back cover 12, plastic bracket 02, and foam 03 must be installed sequentially. This makes forming the sound channel structure in smartphones with related art quite difficult. This is because during the component processing stage, not only must the machining tolerances of the camera trim 01, back cover 12, plastic bracket 02, and foam 03 be overcome, but the assembly tolerances of these four components must also be overcome during assembly. Both the component processing and assembly processes require high process precision. Furthermore, the large number of components leads to higher manufacturing costs for the entire device.

[0077] In view of this, in order to solve the above-mentioned technical problems, the present application provides an electronic device, which can form a sound channel structure by only installing decorative parts, back covers, and elastic seals in sequence. Compared with related technologies, both the number of parts processed and the number of parts assembled have been optimized and reduced, thereby reducing the difficulty of forming the sound channel structure and the manufacturing cost.

[0078] The embodiments of the present application first provide an electronic device, which may also be referred to as a mobile device, terminal device, mobile terminal, or terminal. The electronic device includes, but is not limited to, a handheld device, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem. For example, the electronic device may include a smartphone, headphones, a smartwatch, a smart bracelet, a tablet computer, a laptop computer, a personal digital assistant computer, an in-vehicle computer, a game console, and other electronic devices with active noise reduction functions and requiring sound channel design optimization.

[0079] In order to more conveniently explain the electronic device provided in the embodiment of the present application, as an example rather than a limitation, the following will take the electronic device being a smart phone as an example to explain in detail the technical solution of the present application.

[0080] Figure 3 is a schematic diagram of an example of a smartphone provided in an embodiment of the present application. Figure 3 (a) is a schematic diagram of the back of the smartphone provided in an embodiment of the present application; Figure 3 (b) is a schematic diagram of the front of the smartphone provided in an embodiment of the present application.

[0081] As shown in FIG3 , the smartphone provided in an embodiment of the present application includes a display screen 100 and a housing 10. The housing 10 further includes a middle frame 13 and a back cover 12. The middle frame 13 is a hollow ring-shaped structure, with the display screen 100 fixedly mounted on the front end thereof and the back cover 12 fixedly mounted on the rear end thereof. The display screen 100, the middle frame 13, and the back cover 12 collectively define a housing space 11 for the smartphone, which is used to house various functional components of the smartphone, such as the microphone 70, the motherboard 71, and other functional components described in the embodiments below.

[0082] It should be noted that, when the electronic device is a device such as headphones that does not have a display screen 100 , the accommodating space 11 may also be directly formed by the housing 10 .

[0083] Continuing from the previous paragraph, a smartphone may also include functional components such as a processor, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a mobile communication module, an antenna, a wireless communication module, an audio module, a headphone interface, a sensor module, buttons, a camera, and a subscriber identification module (SIM) card interface.

[0084] These functional elements can be changed according to user needs. It can be understood that the specific embodiment introduced above is only a specific implementation method of the present application. Other ways to implement the solution of the present application are also within the scope of protection of the present application and will not be described in detail here.

[0085] Optionally, the back cover 12 can be screwed, snapped, or bonded to the middle frame 13, and a sealing ring can be provided between the back cover 12 and the middle frame 13 to improve the sealing and waterproof effect at the junction of the back cover 12 and the middle frame 13. The sealing ring can be made of a highly elastic material such as silicone or rubber.

[0086] Since smartphones and other electronic devices now all have camera functions, and due to users' high demand for camera functionality, the number of cameras on smartphones and the number of lenses in each camera are increasing, resulting in a larger size of the entire camera module, especially in the thickness direction. To reduce the overall thickness of smartphones, most cameras protrude from the surface of the smartphone's back cover 12. To maintain the appearance of the smartphone and to protect the camera, a hollow shell-shaped camera decorative member 20 made of metal or plastic is added to the outside of the camera, such as the one shown in Figure 2 (a).

[0087] Optionally, the overall shape of the camera decorative member 20 can be a disk, an elliptical disk, a cuboid, a triangular prism, a polygonal prism, etc. For example, as shown in FIG2( a ), the camera decorative member 20 is in the shape of a cuboid structure.

[0088] Currently, the high-magnification zoom capabilities of smartphone cameras on the market are generally based on "jump zoom," which utilizes two or more lenses of varying focal lengths, combined with algorithm-based digital zoom, to achieve hybrid optical zoom. Therefore, the camera trim 20 is also provided with multiple lens apertures for the camera lenses to receive incident light.

[0089] Optionally, the camera decoration 20 may be provided with a protective cover, which is sealed to the camera decoration 20 to cover the multiple lens holes, thereby providing protection for the camera lens.

[0090] Specifically, at least a portion of the protective cover opposite to the lens hole is made of a transparent material; or, the entire protective cover is made of a transparent material.

[0091] Optionally, a lens module (not shown) is also provided within the camera decorative element 20. The lens module is composed of a lens group, an electronic photosensitive element, a holder, an autofocus drive assembly, a circuit board, a connector, and other components. The lens group is used to image light onto the electronic photosensitive element. The holder can be used to fix the lens. The autofocus drive assembly can include a voice coil motor, a driver integrated circuit, etc., for automatically focusing the lens or performing optical image stabilization.

[0092] Figure 4 is a schematic diagram of another example of a smartphone provided in an embodiment of the present application. As shown in Figure 4 , the smartphone provided in an embodiment of the present application may further include a decorative element 20 on the back cover 12 that can display a logo of the smartphone brand.

[0093] Optionally, the overall shape of the logo decorative part 20 can be a hemisphere, a disk, an elliptical disk, a cuboid, a triangular prism, a polygonal prism or other structures, and the logo is processed and produced on the decorative part 20 by pasting, silk screen printing, engraving or the like; or, the overall shape of the decorative part 20 can also be other special-shaped structures such as letters and patterns, and their outlines constitute the graphics of the logo. For example, as shown in Figure 3, the overall shape of the logo decorative part 20 is the letter "h", which serves to display the brand of the smartphone.

[0094] Optionally, when the overall shape of the logo decoration piece 20 is other special-shaped structures such as letters, patterns, etc., the edges of the logo decoration piece 20 can be chamfered to avoid scratching users or other objects.

[0095] Whether it is the camera decorative piece 20 or the logo decorative piece 20, both can be used to shape or construct the sound channel structure of the embodiment of the present application. The sound channel structure of the electronic device provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0096] FIG5 is a cross-sectional view taken along line BB in FIG3 .

[0097] As shown in FIG5 , an electronic device provided in an embodiment of the present application includes a housing 10 , a decorative component 20 , and an elastic sealing component 30 .

[0098] The housing 10 has an accommodating space 11 for accommodating the microphone 70 . The housing 10 includes a rear cover 12 . The rear cover 12 is provided with a first through hole 121 .

[0099] The microphone 70 can be installed and fixed through the mainboard 71, and the mainboard 71 can be fixed in the accommodating space 11 through a mainboard bracket.

[0100] The decorative member 20 is mounted on the outer side of the rear cover 12 . The decorative member 20 is provided with a sound pickup hole 21 communicating with the first through hole 121 .

[0101] The elastic sealing member 30 is located in the accommodating space 11 and is installed between the back cover 12 and the microphone 70 . The elastic sealing member 30 is provided with a second through hole 31 communicating with the first through hole 121 and the microphone 70 .

[0102] Optionally, the elastic seal 30 includes but is not limited to elastic materials such as foam, rubber, elastomer, resin, fiber, composite material, etc., which can be used to construct the second through hole 31. At the same time, its elastic deformation ability can conveniently install the elastic seal 30 between the back cover 12 and the microphone 70.

[0103] During assembly, the elastic seal 30 can be directly pressed between the back cover 12 and the main board 71; or, the elastic seal 30 can be bonded between the back cover 12 and the main board 71 through the adhesive 60; or, the elastic seal 30 can be directly pressed between the back cover 12 and the main board bracket; or, the elastic seal 30 can be bonded between the back cover 12 and the main board bracket through the adhesive 60.

[0104] The first through hole 121 and the second through hole 31 form a sound pickup channel 80 . External sound waves enter the sound pickup channel 80 through the sound pickup hole 21 and are transmitted to the microphone 70 .

[0105] Optionally, the microphone 70 can be used to receive external noise, and can also be used to receive the user's voice. That is, the sound channel structure in the embodiment of the present application can be used not only on the microphone 70 in the active noise reduction function, but also on the microphone 70 in the voice call function.

[0106] The electronic device provided in the embodiment of the present application has a sound channel structure mainly composed of two parts: a sound pickup hole 21 and a sound pickup channel 80. The sound pickup hole 21 is provided on the decorative member 20, and the sound pickup channel 80 is formed by a first through hole 121 provided on the back cover 12 and a second through hole 31 provided on the elastic seal 30. External sound waves enter the sound pickup channel 80 through the sound pickup hole 21 and are transmitted to the microphone 70, thereby enabling the microphone 70 to receive external sound waves. When assembling the various components to form the sound channel structure, only the decorative member 20, the back cover 12, and the elastic seal 30 need to be installed in sequence. Compared with the related art, both the number of components to be processed and the number of components to be assembled have been optimized and reduced, thereby reducing the process control requirements in the processing and assembly processes of the components. This makes the embodiment of the present application less difficult to form the sound channel structure. In addition, when the sound channel structure in the embodiment of the present application is applied to a smartphone, the reduction in components also reduces the manufacturing cost of the entire device.

[0107] Furthermore, returning to FIG. 1 , in the related art, since the sound pickup channel 80 is formed by the foam 03 and the hole in the plastic bracket 02, the position of the sound pickup channel 80 is restricted by the plastic bracket 02. This also limits the position of the microphone 70, preventing it from being placed directly below the rear cover 12. As shown in FIG. 5 , in the embodiment of the present application, since the sound pickup channel 80 is formed by the rear cover 12 and the elastic seal 30, the microphone 70 can be placed directly below the rear cover 12, making the placement of the microphone 70 more flexible and fully utilizing the accommodation space 11 to optimize the structural design.

[0108] Optionally, the opening of the sound pickup hole 21 facing the outside is located on the top surface or side surface of the decorative component 20 .

[0109] In one embodiment provided in the present application, the axis lines of the first through hole 121 and the second through hole 31 are parallel, that is, the first through hole 121 and the second through hole 31 may not be concentrically arranged.

[0110] In one embodiment provided in the present application, the axis lines of the first through hole 121 and the second through hole 31 are collinear, that is, the first through hole 121 and the second through hole 31 may be concentrically arranged.

[0111] As shown in FIG. 5 , in an embodiment provided in the present application, the opening of the sound pickup hole 21 facing the outside is located on the side of the decorative component 20 .

[0112] In this embodiment, the opening of the sound pickup hole 21 facing the outside is set on the side of the decorative part 20, so that when the user holds the smartphone, it is not easy for the fingers to block the sound pickup hole 21, thereby ensuring that the microphone 70 can effectively receive external sound waves and ensure that the active noise reduction function is effective.

[0113] If the opening of the sound pickup hole 21 facing the outside is not restricted, for example, the opening of the sound pickup hole 21 facing the outside is located at the top of the decorative component 20, then when the user holds the smartphone, especially when making a call, the user's fingers will unconsciously block the sound pickup hole 21, thereby causing the microphone 70 to be obstructed when collecting external sound waves, making the active noise reduction function ineffective.

[0114] As shown in Figure 5, in an embodiment provided in the present application, the decorative part 20 has a first groove 22 on the side facing the back cover 12, one end of the first groove 22 is connected to the outside world, and the other end is connected to the first through hole 121, and the groove wall of the first groove 22 and the surface of the back cover 12 are enclosed to form a sound pickup hole 21.

[0115] In this embodiment, a first groove 22 is provided on the side of the decorative member 20 facing the back cover 12. The first groove 22 and the back cover 12 enclose a sound pickup hole 21, so that the opening of the sound pickup hole 21 facing the outside is located on the side of the decorative member 20. Not only that, the opening of the sound pickup hole 21 facing the outside is also located at the root of the decorative member 20, making it more difficult for users to block the sound pickup hole 21. Specifically, when the user holds the smartphone, even if the finger moves to the opening of the sound pickup hole 21, the finger will be blocked by the side of the decorative member 20 and the back cover 12, so that the finger, the side of the decorative member 20, and the back cover 12 enclose a space that is roughly triangular in shape. The opening of the sound pickup hole 21 is placed in this space and cannot be blocked by the finger, thereby ensuring that the function of the sound pickup hole 21 is effective and external sound waves can enter smoothly.

[0116] Figure 6 is a partial schematic diagram of a decorative element 20 provided in an embodiment of the present application, wherein (a) and (b) in Figure 6 are partial schematic diagrams of the decorative element 20 from different viewing angles.

[0117] As shown in Figure 6, in an embodiment provided in the present application, the decorative part 20 further has a second groove 23 on the side facing the back cover 12, and the first groove 22 and the first through hole 121 are connected through the second groove 23, so that the second groove 23, the first through hole 121 and the second through hole 31 form a sound pickup channel 80; the volume inside the second groove 23 is larger than the volume inside the first groove 22.

[0118] In this embodiment, the first slot 22 and the first through hole 121 are connected through the second slot 23, and the volume inside the second slot 23 is larger than the volume inside the first slot 22. This design enables the second slot 23 to form a space similar to a "Helmholtz resonance cavity" on the sound pickup channel 80. When external sound waves enter the sound pickup channel 80 from the sound pickup hole 21 (or the first slot 22), Helmholtz resonance will occur in the second slot 23 to amplify the external noise and make the noise characteristics more obvious so that it can be more easily received by the microphone 70, thereby indirectly improving the sensitivity of the microphone 70 when collecting noise, thereby providing more accurate noise information for the active noise reduction module.

[0119] In addition, when the sound channel structure is used on the microphone 70 in the voice call function, the second groove 23 can be used to amplify the user's voice, so that the user's voice collected by the microphone 70 is clearer.

[0120] As shown in FIG6 , in one embodiment provided in the present application, the corners of the second groove 23 are rounded chamfers.

[0121] In this embodiment, the corners of the second slot 23 are rounded, which is beneficial to the conduction of sound waves and the occurrence of Helmholtz resonance in the second slot 23 .

[0122] FIG. 7 is a bottom plan view of the decorative element 20 provided in an embodiment of the present application.

[0123] As shown in FIG7 , in one embodiment provided herein, the cross-sectional area of ​​the second groove 23 gradually decreases from the first groove 22 toward the second groove 23. The direction from the first groove 22 toward the second groove 23 is referred to as direction a in FIG7 , and the cross-sectional area of ​​the second groove 23 is referred to as the groove cross-sectional area taken along line EE in FIG7 .

[0124] In this embodiment, the second groove 23 is gradually gathered along the direction a, so that the external sound waves entering the second groove 23 can be gathered and guided to the first through hole 121, so that the sound wave flow direction has directionality, and can be fully received by the microphone 70, further improving the sensitivity of the microphone 70 when collecting noise.

[0125] FIG8 is an overall schematic diagram of the back cover 12 provided in an embodiment of the present application.

[0126] As shown in Figure 8, the back cover 12 is displayed from an upward perspective. A portion of the back cover 12 is hollowed out. This hollowed-out area can be used to shelter certain components of the smartphone, such as the camera module, speaker module, and motor module. For example, in this hollowed-out area, a camera decorative member 20 (not shown) is installed on the outside of the back cover 12. This camera decorative member 20 will completely cover the hollowed-out area, and the camera module lens will pass through the hollowed-out area and extend into the inner cavity of the camera decorative member 20.

[0127] As shown in FIG8 , a first through hole 121 for constructing the sound pickup channel 80 is opened on the rear cover 12 near the hollow portion.

[0128] Figure 9 is a partial schematic diagram of the back cover 12 provided in an embodiment of the present application. Figures (a) and (b) of Figure 9 are partial schematic diagrams of the back cover 12 at different viewing angles.

[0129] As shown in FIG9 and in conjunction with FIG8 , FIG9 shows only a portion of the base of the back cover 12 having the first through hole 121. The back cover 12 has a recessed plane 122 on the side facing the decorative element 20. As shown in FIG6 , the decorative element 20 has a strip-shaped protrusion 24 on the side facing the back cover 12. The recessed plane 122 and the strip-shaped protrusion 24 constitute the stop structure 90.

[0130] Figure 12 shows a cross-section of the stopper structure 90, which is formed by the concave plane 122 and the strip-shaped protrusion 24. The cooperation between the strip-shaped protrusion 24 and the concave plane 122 facilitates the positioning of the decorative member 20 and the rear cover 12 during assembly, while also providing a glue barrier and anti-static properties. The specific functions of the stopper structure 90 are described below.

[0131] First, it plays a limiting role to prevent or reduce the deviation or step difference between the decorative part 20 and the back cover 12, which are two mutually cooperating parts, during assembly. The strip-shaped protrusion 24 and the recessed plane 122 limit the decorative part 20 and the back cover 12 to each other in the horizontal direction, which can also be understood as positioning, which is conducive to assembly.

[0132] Secondly, it can act as a glue barrier to prevent overflow of the adhesive 60. For example, when the strip-shaped protrusion 24 and the concave plane 122 are bonded by the adhesive 60, the portion of the back cover 12 other than the concave plane 122 is actually convex, which can limit the flow of the adhesive 60 on the concave plane 122 and prevent it from overflowing.

[0133] Third, it serves to prevent electrostatic discharge (ESD). If the released static electricity is considered a flood, then the main solution is similar to flood control, and can ultimately be summarized into three solutions: "blocking," "draining," and "eliminating." The "blocking" method is embodied in the embodiment of the present application. The role of the strip protrusions 24 is to act as an electrostatic wall, isolating the static electricity into the second groove 23, making it difficult for the static electricity to enter the accommodating space 11 from the second groove 23. Even if some strong static electricity can penetrate, the energy of this part of the static electricity is greatly weakened due to the action of the strip protrusions 24.

[0134] The situations shown in Figures 6 and 9 are embodiments in which the strip-shaped protrusion 24 is provided on the decorative member 20 and the recessed plane 122 is provided on the rear cover 12. Of course, in another embodiment provided by the present application, the strip-shaped protrusion 24 and the recessed plane 122 can also be provided on the base interchangeably, that is, the strip-shaped protrusion 24 is provided on the rear cover 12 and the recessed plane 122 is provided on the decorative member 20.

[0135] The above describes the stop structure 90 composed of the concave plane 122 and the strip-shaped protrusion 24. In other embodiments, the stop structure 90 can also be a single stop, a double stop, a reverse stop, etc.

[0136] Specifically, the single stopper may be composed of a male stopper and a female stopper.

[0137] Specifically, the double end stop can be a combination of a single male end stop and a double female end stop; or, the double end stop can also be a combination of a double male end stop and a double female end stop.

[0138] Specifically, the reverse stop can be a single reverse stop or a double reverse stop.

[0139] In an embodiment provided in the present application, the strip-shaped protrusion 24 and the recessed plane 122 are bonded by an adhesive 60, so that the decorative component 20 and the rear cover 12 are mechanically connected and better sealing can be achieved at the connection between the two.

[0140] Optionally, the adhesive 60 includes but is not limited to optically transparent adhesive, double-sided adhesive, hot melt adhesive, photosensitive adhesive, pressure-sensitive adhesive, etc.

[0141] Alternatively, the back cover 12 may be made of a prepreg, which is a composite of a resin matrix and reinforcement formed by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions. When forming the recessed surface 122 on the back cover 12, since the back cover 12 is formed by stacking multiple layers of fibers or fabrics, the recessed surface 122 may be formed by partially stacking less or no fibers or fabrics.

[0142] Optionally, the material of the back cover 12 can also be glass, carbon fiber, resin, alloy, etc. When forming the concave plane 122 on the back cover 12, the back cover 12 can be processed by grinding, cutting, drilling, turning, milling, etc. to form the concave plane 122 with a thickness thinner than other parts.

[0143] Figure 10 is an exploded view of the decorative member 20, rear cover 12, air barrier 50, and elastic seal 30 according to an embodiment of the present application. Figure 11 is an assembly view of the decorative member 20, rear cover 12, air barrier 50, and elastic seal 30 according to an embodiment of the present application. Figure 12 is a cross-sectional view taken along line CC in Figure 11.

[0144] As shown in Figures 10 to 12, in an embodiment provided in the present application, the electronic device further includes a breathable barrier 50, which is installed between the back cover 12 and the elastic seal 30, and seals the connection between the first through hole 121 and the second through hole 31.

[0145] In this embodiment, the breathable barrier 50 covers the connection between the first through hole 121 and the second through hole 31, so that the sound pickup channel 80 can be protected by the breathable barrier 50 to prevent external foreign objects from entering, while also ensuring that external sound waves can enter the sound pickup channel 80 and be received by the microphone 70.

[0146] Furthermore, it should be noted that the presence of the breathable barrier 50 inevitably causes the acoustic energy of external sound waves to decrease after entering the sound pickup channel 80 and passing through the breathable barrier 50. This results in inaccurate audio information of the external noise that ultimately enters the microphone 70, which in turn causes inaccurate noise reduction frequency emitted by the active noise reduction module, thereby weakening the active noise reduction function. Therefore, this embodiment can be used in conjunction with the aforementioned "Helmholtz resonant cavity," that is, a second slot 23 with a slightly larger internal volume is designed to be located on the sound pickup channel 80 to amplify the amplitude of the external noise, making the noise characteristics more pronounced and offsetting the acoustic energy loss caused by the breathable barrier 50.

[0147] Alternatively, the breathable barrier 50 may be a mesh, a sponge sheet, or the like.

[0148] As shown in FIG. 12 , in one embodiment provided in the present application, the slot opening area of ​​the second slot 23 and the opening area of ​​the second through hole 31 are both larger than the opening area of ​​the first through hole 121 .

[0149] In this embodiment, the notch area of ​​the second groove 23 and the opening area of ​​the second through hole 31 are both larger than the opening area of ​​the first through hole 121. This facilitates the sealed installation of the decorative member 20 and the rear cover 12, and the elastic seal 30 and the rear cover 12. When adjusting the position of the first through hole 121 relative to the second groove 23 and the second through hole 31, the decorative member 20 and the elastic seal 30 are less likely to block the first through hole 121. Furthermore, the notch area of ​​the second groove 23 and the opening area of ​​the second through hole 31 are both larger than the opening area of ​​the first through hole 121. This allows a certain range of positional margin for the first through hole 121 on the rear cover 12, eliminating the need for overly precise restrictions on the opening position of the first through hole 121 on the rear cover 12, thereby reducing the difficulty of manufacturing the rear cover 12.

[0150] In some other embodiments provided in the present application, only the slot area of ​​the second slot 23 can be designed to be larger than the orifice area of ​​the first through hole 121 to reduce the difficulty of assembling the decorative part 20 and the back cover 12; or, only the orifice area of ​​the second through hole 31 can be designed to be larger than the orifice area of ​​the first through hole 121 to reduce the difficulty of assembling the elastic seal 30 and the back cover 12.

[0151] Figure 13 is a partial schematic diagram of the bracket 40 provided in an embodiment of the present application. Parts (a) and (b) of Figure 13 are partial schematic diagrams of the bracket 40 at different viewing angles.

[0152] Figure 14 is an exploded view of the decorative member 20, rear cover 12, bracket 40, air barrier 50, and elastic seal 30 according to an embodiment of the present application. Figure 15 is an assembly view of the decorative member 20, rear cover 12, bracket 40, air barrier 50, and elastic seal 30 according to an embodiment of the present application. Figure 16 is a cross-sectional view taken along line DD in Figure 15 .

[0153] As shown in Figures 14 to 16, in an embodiment provided in the present application, the electronic device also includes a bracket 40, which is installed between the back cover 12 and the elastic seal 30. The bracket 40 is provided with a third through hole 41 that connects the first through hole 121 with the second through hole 31, so that the second groove 23, the first through hole 121, the third through hole 41 and the second through hole 31 form a sound pickup channel 80.

[0154] In the aforementioned embodiments, the sound pickup channel 80 is constructed by components such as the back cover 12 and the elastic seal 30. When the sound pickup channel 80 is occupied by other components and it is inconvenient to avoid it, other components can also participate in the construction of the sound pickup channel 80. For example, in this embodiment, when the decorative member 20 is a camera decorative member, the sound pickup channel 80 is adjacent to the camera and interferes with the camera bracket. If the camera bracket cannot avoid it, a third through hole 41 can be provided to participate in the construction of the sound pickup channel 80. Alternatively, when the decorative member 20 is a logo decorative member, the sound pickup channel 80 is adjacent to the mainboard 71 and interferes with the mainboard bracket. If the mainboard bracket cannot avoid it, a third through hole 41 can be provided to participate in the construction of the sound pickup channel 80. Therefore, in the embodiment of the present application, if the bracket 40 interferes with the sound pickup channel 80, there is no need to avoid the bracket 40. Instead, the bracket 40 can be directly used to construct the sound pickup channel 80. This is conducive to structural design and can reduce the difficulty of designing the bracket 40 to avoid it.

[0155] In addition to the advantages of being conducive to structural design as described above, this embodiment also has the advantage of ensuring the strength and reliability of the bracket 40. How to understand this advantage? Taking FIG16 as an example, assuming that the bracket 40 does not have the third through hole 41, but is designed to avoid the sound pickup channel 80, then the reasonable design should be to have an avoidance groove to make room for the molded base (elastic seal 30) of the sound pickup channel 80. However, this leads to two problems: first, providing the avoidance groove actually means cutting off a portion of the base material of the bracket 40, which will affect the overall structural strength of the bracket 40; second, the bonding area between the bracket 40 and the back cover 12 is cut off, which also affects the connection strength between the bracket 40 and the back cover 12. Both of these problems will reduce the strength and reliability of the bracket 40 on the smartphone, reduce the load-bearing capacity of the camera or the motherboard 71, and thus reduce the functional reliability of the smartphone.

[0156] Furthermore, in an embodiment provided in the present application, a breathable barrier 50 is installed between the bracket 40 and the elastic sealing member 30 , and the breathable barrier 50 covers the connection between the second through hole 31 and the third through hole 41 .

[0157] In this embodiment, the breathable barrier 50 covers the connection between the second through hole 31 and the third through hole 41, so that the sound pickup channel 80 can be protected by the breathable barrier 50 to prevent the entry of foreign objects from the outside, while also ensuring that external sound waves can enter the sound pickup channel 80 and be received by the microphone 70. In addition, the breathable barrier 50 in this embodiment will also cause the sound energy of the external sound waves to decrease, thereby making the external sound wave information that ultimately enters the microphone 70 inaccurate, and further causing the noise reduction frequency emitted by the active noise reduction module to be inaccurate, thereby weakening the active noise reduction function. Therefore, this embodiment can be used in combination with the above-mentioned "Helmholtz resonance cavity", that is, a second groove 23 with a slightly larger internal volume is designed to be located on the sound pickup channel 80 to amplify the external noise, making the noise characteristics more obvious, and offsetting the sound energy loss caused by the breathable barrier 50.

[0158] In one embodiment provided in the present application, the bracket 40 is a camera bracket.

[0159] In another embodiment provided in the present application, the bracket 40 is a mainboard bracket.

[0160] As shown in FIG. 13 , in one embodiment provided in the present application, the bracket 40 has a receiving groove 42 , the decorative member 20 and the back cover 12 are located in the receiving groove 42 , and the back cover 12 is bonded to the bottom of the receiving groove 42 by an adhesive 60 .

[0161] In this embodiment, the structure of the bracket 40 is further limited, and a receiving groove 42 is provided for accommodating the decorative element 20 and the rear cover 12 , so that the decorative element 20 , the rear cover 12 , and the bracket 40 have a compact structure after being assembled together.

[0162] By bonding with the adhesive 60 , the back cover 12 and the bracket 40 are mechanically connected, and better sealing can be achieved at the connection point between the third through hole 41 and the first through hole 121 .

[0163] As shown in FIG. 14 , in one embodiment provided in the present application, the bracket 40 has a positioning structure 43 on a side facing the breathable barrier 50 , and the breathable barrier 50 is bonded to the positioning structure 43 by an adhesive 60 .

[0164] In this embodiment, the positioning structure 43 can determine the installation position of the breathable barrier 50, making the assembly process more convenient. In addition, the adhesive 60 not only mechanically connects the breathable barrier 50 to the bracket 40, but also achieves a good seal at the connection between the third through hole 41 and the breathable barrier 50.

[0165] Optionally, the positioning structure 43 may be a groove or a boss.

[0166] In one embodiment provided in the present application, the axis lines of the first through hole 121, the third through hole 41, and the second through hole 31 are parallel. That is, the first through hole 121, the third through hole 41, and the second through hole 31 may not be concentrically arranged.

[0167] In one embodiment provided in the present application, the axis lines of the first through hole 121, the third through hole 41, and the second through hole 31 are collinear, that is, the first through hole 121, the third through hole 41, and the second through hole 31 may be concentrically arranged.

[0168] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that: include: A housing (10) having an accommodating space (11) for accommodating a microphone (70), the housing (10) comprising a rear cover (12), the rear cover (12) being provided with a first through hole (121); A decorative piece (20) is installed on the outer side of the rear cover (12), and the decorative piece (20) is provided with a sound pickup hole (21) connected to the first through hole (121); an elastic sealing member (30) located in the accommodating space (11) and installed between the rear cover (12) and the microphone (70), the elastic sealing member (30) being provided with a second through hole (31) communicating with the first through hole (121) and the microphone (70); The first through hole (121) and the second through hole (31) form a sound pickup channel (80).

2. The electronic device according to claim 1, wherein The decorative part (20) has a first groove (22) on the side facing the back cover (12), one end of the first groove (22) is connected to the outside, and the other end is connected to the first through hole (121), and the groove wall of the first groove (22) and the surface of the back cover (12) are enclosed to form the sound pickup hole (21).

3. The electronic device according to claim 2, wherein: The decorative member (20) further has a second groove (23) on a side facing the rear cover (12), and the first groove (22) and the first through hole (121) are connected via the second groove (23), so that the second groove (23), the first through hole (121) and the second through hole (31) form the sound pickup channel (80); the volume inside the second groove (23) is greater than the volume inside the first groove (22).

4. The electronic device according to claim 3, wherein: From the first groove (22) to the second groove (23), the cross-sectional area of ​​the second groove (23) gradually decreases.

5. The electronic device according to claim 3, wherein: The opening area of ​​the second groove (23) is larger than the opening area of ​​the first through hole (121); And / or, the orifice area of ​​the second through hole (31) is greater than the orifice area of ​​the first through hole (121).

6. The electronic device according to any one of claims 1 to 5, characterized in that: A stop structure (90) is provided at the junction of the decorative piece (20) and the rear cover (12).

7. The electronic device according to claim 6, wherein: The stop structure (90) includes a strip-shaped protrusion (24) and a concave plane (122) that is similar in shape to the strip-shaped protrusion (24), wherein the strip-shaped protrusion (24) is arranged on one of the decorative part (20) and the rear cover (12), and the concave plane (122) is arranged on the other of the decorative part (20) and the rear cover (12).

8. The electronic device according to claim 7, wherein: The strip-shaped protrusion (24) and the recessed plane (122) are bonded together by an adhesive (60).

9. The electronic device according to any one of claims 1 to 8, characterized in that: Also includes: A breathable barrier (50) is installed between the rear cover (12) and the elastic sealing member (30), and seals the connection between the first through hole (121) and the second through hole (31).

10. The electronic device according to any one of claims 3 to 5, characterized in that: Also includes: The bracket (40) is installed between the rear cover (12) and the elastic seal (30), and the bracket (40) is provided with a third through hole (41) connecting the first through hole (121) and the second through hole (31) so that the The second groove (23), the first through hole (121), the third through hole (41), and the second through hole (31) form the sound pickup channel (80).

11. The electronic device according to claim 10, characterized in that The bracket (40) has a receiving groove (42), the decorative component (20) and the back cover (12) are located in the receiving groove (42), and the back cover (12) is bonded to the bottom of the receiving groove (42) by an adhesive (60).

12. The electronic device according to claim 10 or 11, characterized in that: Also includes: A breathable barrier (50) is installed between the bracket (40) and the elastic sealing member (30), and covers the connection between the second through hole (31) and the third through hole (41).

13. The electronic device according to claim 12, wherein: The bracket (40) has a positioning structure (43) on one side facing the breathable barrier (50), and the breathable barrier (50) is bonded to the positioning structure (43) by an adhesive (60).

14. The electronic device according to any one of claims 1 to 13, characterized in that: The decorative piece (20) includes a logo decorative piece or a camera decorative piece.

15. The electronic device according to any one of claims 10 to 13, characterized in that: The bracket (40) includes a camera bracket or a mainboard bracket.

16. The electronic device according to any one of claims 10 to 13, characterized in that: The hole axes of the first through hole (121), the third through hole (41), and the second through hole (31) are parallel or collinear.

17. The electronic device according to any one of claims 3 to 5, characterized in that: The corners of the second groove (23) are rounded chamfers.

18. The electronic device according to any one of claims 1 to 17, characterized in that: The axis lines of the first through hole (121) and the second through hole (31) are parallel or collinear.

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